They say men look distinguished when their hair starts to grey, and so it looks like Simon Cowell has taken heed of that fact.

The music mogul has been rocking a salt and pepper look at the Britain's Got Talent auditions in Cardiff, having had an inky black barnet up until the end of last year.

He missed the National Television Awards on Wednesday night, but that wouldn't have been to disappointing, as none of his shows picked up any trophies.

Silver fox: Simon Cowell has stopped dyeing his hair while filming Britain's Got Talent in Cardiff, having sported an inky black 'do in December last year

In Wales though, as the 53-year old said hello to fans, the silver fox really came out.

But it's not the first time the talent show judge has let his natural colour take over, for he sported a similar look when conducting the Britain's Got Talent auditions at the beginning of January for the last three years.

And the soon-to-be father - who is having a baby boy with his 36-year old fiancée Lauren Silverman - now thinks he doesn't need to colour his mane to be cool, despite the fact he'll be an older dad.

'You can be cool as you get older if you're (a) successful and (b) you can relate to younger people without acting like an idiot. But don't dye your hair,' he told Esquire magazine.

Growing old gracefully: The talent show judge has let his natural hair colour come through, but it seems to be a habit for Simon, as he has gone grey for the last three years at the BGT auditions in January

Normally, Simon takes a great interest in maintaining his youthful appearance, and over the years has admittedly resorted to Botox to keep his face wrinkle-free.

He once said: 'I’ve had Botox, but then again, pretty much everyone I know has. To me, Botox is no more unusual than toothpaste. It works, you do it once a year — who cares?'

Simon is also said to use vitamin injections, placenta facials and smoothies in a bid to keep a youthful appearance.

Maintaining youth: Simon has admittedly used Botox to keep his face wrinkle-free

Distinguished: It is said that men going grey is a mark of respectable distinction, and he looked it when walking towards the audition hall in Cardiff with Amanda Holden, David Walliams and Alesha Dixon

Here they go again: The judges are looking for the next big talent in the UK

In Tom Bower's biography of the music
mogul, Sweet Revenge, he says Cowell would get regular colonic
irrigations because 'it's so cleansing – and it makes my eyes shine
brighter.'

Fans couldn't
see Simon's eyes as he arrived for the BGT auditions on Wednesday, as he
was wearing his favourite aviator sunglasses with a grey T-shirt,
jeans, scarf and long black overcoat.

He
joined fellow judges Alesha Dixon, Amanda Holden and David Walliams in
Cardiff, as they try to find some of the country's best talent to
compete for a spot at the Royal Variety Performance and win a six-figure
cash prize.

Alesha's old show, Strictly Come Dancing, beat The X Factor and Britain's Got Talent to take home the Best Talent Show prize.